I would post a notice on the door that you WILL come in on [DATE] at [TIME] to investigate the leak and make repair.

As an architect - I have been investigating and designing this environment for a while, and constantly fine tuning the approach, while refining the design, the expenses, and the overall experience that could be created in this type of development.

I also considered a cash out refi but my DTI is too high to be able to do that in the foreseeable future.Selling was our best option to take our equity out, pay off our remaining debts to resolve the DTI issues, and start fresh with the remaining cash.We accepted a contract last night and will be moving forward with the sale.

Should we replace the windows and have a fresh look, or leave them the same? 

I even hired a private investigator to track him down but came up empty-handed after a year.

If you're much higher than that, you may want to investigate toilets because those are the #1 culprits of water waste.

Is this still very fresh and they have not had time to move past the shock of the event?

It sounds like you are fresh out of a guru seminar.

Like for example in Virginia it's a buyer's responsibility to investigate, not seller responsibility to disclose property defects. 

I have remodeled the upstairs with hardwood flooring and fresh paint.